/*
 * Copyright (c) 2004-2022, University of Oslo
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer.
 *
 * Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 * Neither the name of the HISP project nor the names of its contributors may
 * be used to endorse or promote products derived from this software without
 * specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
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 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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 */
package org.hisp.dhis.analytics.dimension;

import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.Matchers.is;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;

import com.fasterxml.jackson.databind.node.ObjectNode;
import java.util.Collection;
import java.util.Collections;
import java.util.Set;
import java.util.stream.Collectors;
import java.util.stream.IntStream;
import org.hisp.dhis.analytics.dimensions.AnalyticsDimensionsPagingWrapper;
import org.hisp.dhis.common.DimensionsCriteria;
import org.hisp.dhis.fieldfiltering.FieldFilterParams;
import org.hisp.dhis.fieldfiltering.FieldFilterService;
import org.hisp.dhis.webapi.dimension.DimensionFilteringAndPagingService;
import org.hisp.dhis.webapi.dimension.DimensionResponse;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;

public class DimensionFilteringAndPagingServiceTest {

  private final FieldFilterService fieldFilterService = mock(FieldFilterService.class);

  private DimensionFilteringAndPagingService service;

  private Collection<DimensionResponse> dimensionResponses;

  @BeforeEach
  public void setup() {
    service = new DimensionFilteringAndPagingService(fieldFilterService);

    dimensionResponses =
        IntStream.rangeClosed(1, 10)
            .mapToObj(this::buildDimensionResponse)
            .collect(Collectors.toList());

    when(fieldFilterService.toObjectNodes(any()))
        .thenAnswer(
            invocationOnMock -> {
              FieldFilterParams<DimensionResponse> argument = invocationOnMock.getArgument(0);
              return argument.getObjects();
            });
  }

  @Test
  public void testPaging() {
    DimensionsCriteria criteria = new DimensionsCriteria();
    criteria.setPageSize(5);

    AnalyticsDimensionsPagingWrapper<ObjectNode> pagingWrapper =
        service.pageAndFilter(dimensionResponses, criteria, Collections.singletonList("*"));

    assertThat(pagingWrapper.getDimensions().size(), is(5));
  }

  @Test
  public void testFiltering() {
    DimensionsCriteria criteria = new DimensionsCriteria();
    criteria.setFilter(Set.of("name:eq:test"));

    AnalyticsDimensionsPagingWrapper<ObjectNode> pagingWrapper =
        service.pageAndFilter(dimensionResponses, criteria, Collections.singletonList("*"));

    assertThat(pagingWrapper.getDimensions().size(), is(5));
  }

  private DimensionResponse buildDimensionResponse(int operand) {
    DimensionResponse.DimensionResponseBuilder builder = DimensionResponse.builder();
    return (operand % 2 == 0 ? builder.name("test") : builder.name("another")).build();
  }
}
